Yes I used those for a long time until things started to get crowded. I switched to their 3x6" tiles and break them in half now.
https://www.homedepot.com/p/Jeffrey...n-Travertine-Wall-Tile-8-Pack-99101/202309901
Do you just rinse them in ro/di or do you do anything else? I am going to be getting some of these today as I ran out of tiles I had before.